Ensuring Safety with System Level Formal Modelling

摘要

During the last five years, Event-B formal modelling has been successfully applied to various railway systems to demonstrate safety early in the design process or once systems are in operation. This approach is aimed at formalising a safety reasoning instead of modelling every bit of the system. This approach is intrinsically fit to scale up to large systems (or system of systems), hence able to handle centralised or distributed systems.